Wikipedia
Supersnipe is a fictional character who appeared in a series of comic books published by Street & Smith from 1942 to 1949. Supersnipe was the imagined alter ego of Koppy McFad, "the boy with the most comic books in the world." He was created by writer-artist George Marcoux, who had previously assisted Percy Crosby on the comic strip Skippy.
The character first appeared in issues of Shadow Comics (vol. 2 no. 3) and Army and Navy Comics (vol. 1 no. 5), whose title changed to Supersnipe with its next issue. Supersnipe appeared for a total of 44 issues before ceasing publication in 1949.
The stories centered on the theme that Supersnipe had read so many comic books ("he reads 'em, breathes 'em, and sleeps 'em") that in his imagination, he turned into a costumed super-hero himself. In his adventures, Supersnipe sometimes partnered with Ulysses Q. Wacky, another boy whose stories caption him as an "inventor and genius unlimited."
Supersnipe has been described as "the first comic book to deal with comics themselves as subject matter."